Carbon paper holder for manifolding typewriters



2 Sheets-Sheet l J. c. DOYLE CARBON PAPER HOLDER FOR MANIFOLDING TYPEWRITERS Filed Nov; 28, 1945 WWWWWW@HMWWWWW| WWWMHWHHMHW MIHHHHMIHHIHH Feb. 1, 1949.

Feb. 1, 1949. I 'J. c. DOYLE 2,460,683

CARBON PAPER HOLDER FOR MANIFQLDING TYPEWRITERS Filed Nov. 28,1945 2 Sheets-Sheet 2 ){JHIHIIHHHHHIHHIIIHHIHHHWIHIIWWHIHHHIH 7 INVENTOR; c o agvk Qi'loZZIqyZe %z's wagy Patented Feb. 1, 1949 CARBON PAPER HOLDER FOR MANIFOLD- ING TYPEWRITERS Joseph Carroll Doyle, Baltimore, Md., assignor to Kee Lox Manufacturing Company, Rochester, N. Y., a corporation of New York Application November 28, 1945, Serial No. 631,375

1 12 Claims. 1

This invention relates to carbon paper holding means for manifolding typewriters of the type in which a series of sheets of carbon paper are each connected to an independent supporting bar or blade of a movable carbon paper carriage and interposed between continuous sheets of paper on which the desired typewritten records are to bemade, the carbon paper carriage being withdrawn after each typing operation to remove the carbon sheets from between and permit tearing oif the typewritten records from the continuous record sheets, and it has for its principal purpose to afiord a structure including a holding or leader sheet that can be permanently fastened to a supporting bar of a typewriter and a carbon paper carrier that is removably associated with he holding sheet whereby the carbon paper can,

be adjusted or renewed by detaching its carrier from the holding sheet, without the necessity of removing the holding sheet, or otherwise disturbing the relation between the holding sheet and the typewriter supporting bar.

Another'purpose of the invention is to afford a construction of holding sheet that is permanently secured to a supporting bar and permits the use of a continuous sheet of carbon paper wound or rolled on a, carrier, which can be quickly removed from and reattached to the permanent holding sheet whenrit is necessary to bring a fresh portion of carbon into typing position and to insert a new carbon paper assembly.

Still a further object of the invention is to afford an arrangement whereby a carrier with carbon paper wound thereon can be easily attached to a permanent holding sheet without the necessity of any metal parts or fastening devices by means of an interlocking or other suitable retainingconnection between the holding sheet I and the carbon paper assembly, affording a quickly detachable relationship between these parts. 7

An additional purpose of the invention is to afford a construction of holding sheet that is In the drawings: v Fig. 1 is a plan view of a structure made in ac- I cordance with a preferred embodimentoi the incarrier plate removed from the holding sheet;

Fig. 4 is a plan View of the carrier plate with the carbon paper unrolled and showing its one end fastened to the carrier;

Fig. 5 is a sectional view on the line 5-5 of Fig. 1, and

Fig. 6 is an end elevation of the carbon paper and carrier plate.

Various structures have been used for attaching carbon paper in manifolding typewriters and the prior devices possess various disadvantages which are overcome by the present invention. It has been proposed to fasten a sheet of carbon paper to each supporting bar of the typewriter, and this was found objectionable because a bar must be removed each time a'carbon is replaced. Another disadvantage lies in the excessive waste each time a carbon is replaced because of the length of carbon paper constituting the connecting portion between the typing area and the supporting bar.

Another proposed structure employs a carbon sheet attached to a leader sheet of plain paper which in turn is secured to the supporting bar. This is also open to the objection of excessive waste of carbon paper as well as the difilculty and loss of time involved in removing the leader sheet from a supporting bar each time a carbon is to be replaced.

There has also been employed a, flat rolled pack of carbon paper secured to a supporting bar, but this has the objection that the carbon paper pack must be removed from the supporting bar and repositioned each time that the carbon paper is unfolded to expose a fresh portion, or when the carbon pack is renewed, entailing considerable lossof time. v

Another prior structure utilizes a series of sheets of carbon paper attached to a common leader sheet which in turn is secured to a supporting bar,

and this structure isalso open to the objection of excessive waste, because a certain portion of each'carbon sheet serves as a connection from the typing portion to the leader sheet and cannot be used. In addition, the leader sheet must be removed from the supporting bar when the carbon sheets are used, and in order to insert a new 'necte'd to the supporting bar 2.

carbon pack, a new leader sheet must be attached to the supporting bar. This structure is open to a further objection that when tearing off a used sheet of carbon and positioning a fresh carbon for operation, the operators fingers necessarily come in contact with the carbon coating and it is,difficult to prevent soiling the hands.

All the above mentioned disadvantages are overcome with the present invention which is the first instance of a structure in which a leader or holding sheet is permanently fastened to a supporting bar of a manifolding typewriter, and is constructed so as to hold a supply of carbon paper wound on a carrier or plate, the carbon paper assembly being detachably secured to the holding sheet for operation in a typewriter in the same manner and with the same degree of elriciency as if the carbon sheet were attached directly to the supporting bar. permits a carbon paper assembly to be easily and quickly removed from. a holding sheet to position another portionjor the carbon paper for operation or to permit "theinsertion of a new carrier with a :iresh supply-of carbon paper;

With such a structure, asubstantial supply of carbon paper can be wound on a'carriez' and unfolded as fresh portions are required by temporarily removing the carrier from the holding sheet, with no'was-te of carbon paper-except the small portion at the end of the roll which attaches-to the carrier plate. -A material saving in time results because it is unnecessary to remove the supporting bars from the typewriter at any time after the holding sheets are once-attached, and proper position of each carbon sheet is assured by the connection between the holding sheet and the-carbon assembly.

Thisresultmay be "accemplished in a variety of ways, and in the construction disclosed, which is intended merely as illustrative of one practical secured to asupporting bar 2, constituting a conventional part of a manifolding typewriter, as

This arrangement plate is about four inches in width, and lies fiatwise on the stiff supporting portion of the holdingsheet,being removably secured thereto in any practical manner; with the free end of the carbon paper extending beyond the holdin sheet for positioning between sheets of record paper,

, as usual in a manifold typing operation.

The detachable connection between the carbon paper assembly and the holding sheet may I oranysuitable form, and in order to accomplish this in the embodimentillustratedjthe hold ing sheet is provided with two spaced parallel slots- 8 extending transversely of the holding sheet and spacedapart a distance between the outermost edges of the slots somewhat less than the widthoi the carrier plate l so that when oppc'site edges or the carrier plate 1' are inserted through the slots 8, the body of 'the'carrier plate with'the carbon'paper rolled thereon will be-positi'onedon one side of the-holding sheet while the edges of the carrier plate extend through the slots-8 and "engage the opposite side of the holding' sheet. 1

well known in the art. The holding sheet may be permanentlyufastened to the supporting b24122 in any convenient way as by folding it around one edge of the supporting'bar and securing'it in 100 siti'on by spring clips 3, and when once attached, the holding sheet remains permanently co- When the supporting'bar is once positionedin the carbon paper carriagewith the holding sheet secured, it is not againremoved or disturbed, and the carbon sheet can be adjusted in relation to the holding sheet toexpose a fresh portion of carbon whenever required,* or"a new carbon paper assembly can be attached-to the holding sheet, without removing the latter from the supporting bar it.

The holding sheet also includes a supporting portion: A preferably thicker and stifier than the connectingportioni l: and formed of several thicknesses of material by folding one thickness aroundthe lower part of the first. mentioned thickness; and cementing-it thereto on opposite sides, so that the connecting portion 1 consists of: a singlet ply-andzth'e supporting portion 5 consists of three plies of the same material, thus according to the supporting portion suflicient bodyand 'stifiness to'maintain the carbon paper carrier plate in proper position.

The carbon paper assembly preferably consists of asheetof carbon paperv 5 having on end I To e'nabie inserting the carrier "plate and carbcn'paperthrough the slots 8, the slots are slightly greater in length than the opposite side edges of the carrierplate The carbon paper has a width the 'sarne as or less than the length of the opposite edges of the carrier plate .7, and somewhat less than the length of the'slots 8, whereby the carbon paper assembly ca'n be readily inserted through-the 'slotsll. The carrierplate is positioned on'the holding sheet by first inserting the free end "of the carbon sheet '5 through the lower slot 8, with the carbonsurface uppermost, andthen-inserting the opposite side edges of the cai rier'plate throughjthe slots 8 while flexing slightly the ends of the carrier platetr'ansvers'ely with the thumb and fingersyuntil they enter the slots 8 and assume the position illustrated in Figs. lance.

Some" means must be provided'for holding the carrier plate and carbon paper in operative p0- s'ition on the holding sheet and engaged with the slots 8, and this is accomplished in the structure shown by locking portions 9 arranged centrally or the carrier platel and extending endwise beybnd the ends of slots 8 when the carrier plate a is positioned; The locking portions 9 are of slightly less width than the distance between the innermostedges of the slots ,8 and serve to'hold the carrier plate securely engaged with the slots 2. To effect removal of the carrier plate from theslots; the edges of the plate Tare engaged and the plate flexed transversely until the opposite side edges are disengaged from the slots, and this operation is facilitated by cuttingaway the side edges of the holding sheet at It! to aiford recesses which permit readily taking hold of the underside of "the carrier plate at its ends, when it is Dositioned on the holding sheet. If preferred, the upper slot 8 can be omitted, the carbon paper extending through the lower slot, and the carrier plate'held removably on the holding sheet by any suitable means. 7 7

'In operation, to attach a carbon paper. assembly, the carbon paper is unwound from the carrier plate to expose a free end of sufficient length for a typing operation and the free end is inserted through the lower slot 8 of the holding sheet. At the same time, the ends of the carrier plate 1 are held and flexed while holding the carrierplate against the holding sheet and insertingthe opposite side edges of the carrier plate and carbon paper wound thereon into the slots 8. .The locking portions 9 engage the front of the holding sheet between and beyond the slots 8, as shown in Fig. 1, whereas the opposite side edges of the carrier. plate extend through the slots and engage the opposite face of the holding sheet, as shown in Fig. 2. When the exposed portion of the carbon paper has been used and is no longer of service, the carrier plate is flexed and removed from the holding sheet in the manner already described, and the carbon paper unwound from the carrier plate to bring a fresh portion into operative position, after'which the carrier plate is again attached to the holding sheet in interlocking engagement with the slots 8. The used portion of the carbonsheet is torn off and the carbon paper is ready for another operation. This procedure is continued until the entire length of carbon paper wound on the plate I is used, whereupon it is removed from the holding sheet and another carrier plate with a fresh supply of. carbon paper is inserted into the slots and supported on the holding sheet.

'With this construction, it is possible for the operator to bring a fresh supply ofcarbon" paper into operative position, or to insert a new carbon paper assembly without removing or disturbing in any way the supporting bar, so that after the holding sheet is once positioned properly, on

the typewriter supporting ban-accurate and proper positioning of the carbon sheet is automatically assured and no further adjustment is required. The carbon paper assembly can be quickly secured to a holding sheet and easily removed whennecessary to bring a fresh portion of'carbon into operative position or to insert a new carbon paper assembly, and this can be done without contacting the carbon surface of the paper so 'that'soiling the fingers is prevented.

'While the invention has been described with reference to the particular structural embodiment shown, it is not confined to the details herein disclosed, and this application is intended to cover such modifications. or changes as 'may come within the purposes of the improvements or the-scope of the following claims.

I claim:

1. The combination with a sheet that is permanently attachable porting bar of a inaniiolding typewriter, of a carbon paper carrier detachably and interlockingly connected to said holding sheet, and a length of carbon paper fastened at one end to the carrier and wound continuously'therearound affording a multiplicity of superposed thicknesses and a free endextending beyond said holding sheet, the holding sheet provided with means interlockingly engaging the carbon paper carrim and permitting removal of the carbon paper and carrier without disturbing the position of the holding sheet on the supporting bar, the

flexible holding carbon paper carrier being retained on the holding sheet by the interlocking relation between the holding sheet and carbon paper carrier.

to a sup 2i Thefcornbination with a flexible holding sheet that is permanently attachable to a'supporting bar of a manifolding typewriter, of a carbon paper carrier consisting of a plate detachably and interlockingly mounted on said holding sheet, and a length of carbon paper fastened at one end to the carrier plate and wound 3. Thecombination with a flexible holding sheet thatis permanently attachable to a sup-' porting bar or" amanifolding typewriter, of a relatively wide carrier plate 'of stiff material de-r tachably connected to saidsheetand quickly removable therefrom, the carrier plate having intel-locking means engaging the holding sheet and permitting removal of the carrier plate and carbon paper without disturbing the position of the holding sheet on the supporting bar, and

a length of carbon paper fastened at one end to the carrier plate and wound continuously therearound affording a multiplicity of superposed thicknesses and a free end extending beyond said holding sheet.

4. The combination with a flexible holding sheet that is permanently attachable to a sup-' porting bar of a manifolding typewriter, of a carbon paper carrier of stiff material removably associated with said sheet and quickly detachable therefrom, means on the carrier having interlocking engagement with the holding sheet and permitting removal 'of' the carrier and carbon. paper without disturbing the position of the.

holding sheet on the supporting bar, and a length of carbon paper fastened at one end to the carrier and continuously folded therearound with a free end extending beyond said holding sheet. I

5. The combination with a flexible holding sheet that is permanently attachable to a supporting bar of a manifolding typewriter, said holding sheet having spaced parallel slots extending transversely thereof, of a carbon paper carrier consisting of a stiil plate having a width somewhat greater than the distance between the outermost edges of said slots and side edges of less length than said slots, said carrier being provided with looking portions at its ends extending beyond said slots and of slightlyless width than the distance between the innermost edges of the slots, and-a length of carbon paper having one end attached to the carrier and wound continuously therearound, the carbon paperbeing of less width than the length of the slots and the locking portions of the carrier being positionable on one side of said holding sheet while opposite edges of the carrier and carbon paper assembly extend through said slots to the opposite side of said holding sheet and a free end of the carbon paper extends beyond the holding sheet, permitting removal of the carrier plate and carbon paper without disturbing the position of the holding sheet on the supporting bar.

.6. Thecombination with a flexible holding sheet that is permanently attachable to a supporting bar of a manifolding typewriter, the hold- 7' ing-sheet including a relatively thin connecting portion and a. relatively thicker supporting portion, said supporting portion of the holding sheet having a pairof parallel spacedslots extending transversely thereof, of a carrier consisting of a stifi; plate having a width greater than the dis tanoe between the outermost edges or" said slots and detachably positionable through the slots, said carrier having opposite side edges of less length, than the slots and central locking portions at. its end extending beyond the ends of the slots and, of less width than the distance between the nnermost edges of the slots, and a length of carbon paper having one end fastened to the carrier and wound continuously thereon, the carbon papen-being of less width than the length of said slots and the opposite side edges of the carrier and the carbon paper assembly being insertable through said slots to one side of the holding sheet while said locking portions engage the opposite sideiof the holding sheetand a free end of the carbon. paper extends through one of the slots beyond said holding sheet, permitting removal of the carrier plate and carbon paper without disturbing the position of the holding sheet on the supporting bar.

M7. The combination with a flexible holding sheet, that is permanently attachable to a supporting bar of a manifolding typewriter, said holding sheet having a transverse slot near its lower edge, of a carbon paper carrier consisting of a, stiff plate removably associated with said holding sheet and quickly detachable therefrom, and a length of carbon paper fastened at one end to. the carrier plate and wound continuously thereon affording a multiplicity of thicknesses and'a free end extending through said slot beyond the holding sheet, the holding sheet provided with means engaging the carrier and permitting removal of the carbon paper and carrier without disturbing the position of the holding sheet on the supporting bar. a r

8, The combination with a flexible holding sheet that is permanently attachable to a supporting bar of a manifolding typewriter, the holding sheet including a connecting portion comprising a single thickness of material and a supporting portion comprising another thickness of material folded around both sides of said first thickness and cemented on both sides thereto affording a triple thickness of materiaLsaid supporting portion of the holding sheet having a pair of parallel spaced slots extending-transversely thereof, of a carrier consisting of a stiff plate having a width greater than the-distance between the outermost edges of said slots and detachably positionable through the slots, said carrier having opposite side edges of less length thanthe slots and central locking portions at its endsextending beyond the end-s of the slots and ofless width than thedistance between the innermost edges of the slots, and a length of carbon paper having one end fastened to the carrier and wound continuously thereon, the carbon paper being of less width than the length of said slots and the opposite side edges of the carrier and the carbon paper assembly being insertable through said slots to one side of the holding sheet while said locking portions engage the opposite side of the holding sheet and a free end of the carbon paper extends through one of the slots beyond said holding sheet, permitting removal of the carrier plate and carbon paper without disae'edess 8 turbine position of. the ho in sheet onthe, supporting bar. V

9,. The combination with a flexible holding sheet that is permanently attachable to a supporting bar of a manifolding typewriter, a carbon paper carrier and a. length of carbon paper Wound continuously thereon affording a multiplicity of superposed thicknesses. and a free end extending beyondthe holding sheet, of interlocking retain,

,ing means located between the side edges of the without disturbing the position of the holding sheet on the supporting bar.

10, The combination with a flexible holding sheet that i permanently attachable. to a sup porting bar of a manifolding typewriter, of a flexible carbon paper carrier extending across the.

width of the holding sheet and detachably and interlockingly connected to said holding sheet, the, holding sheet being provided with means in, terlockingly engaging the carbon paper carrier at; its ends and permitting removal of the carbon paper and carrier without disturbing the position of the holding sheet. on the supporting bar, the carbon paper carrier being retained on the hold ingsheet by the interlocking relation between the engaging means and carbon paper carriercand attached thereto by a relative flexing of one of said parts in the direction of the plane of the holding sheet.

11. The combination with a flexible holding sheet that-is permanently attachable to a supporting bar of a manifolding typewriter, and a carbon paper pack comprising a length of carbon paper wound continuously and affording a multiplicity of superposed thicknesses and a free end extending beyond the holding sheet, of retaining means extending through the carbon paper pack from one end thereof to the other and detachably and interlockingly connected to the holding sheet for permitting removal of the carbon paper'pack 7 without disturbing the position of the holding sheet'on the supporting bar, thefiexible holding sheet being provided with means interlockingly and detachably engaging said retaining means.

12. The combination-with a flexible holding sheet that is permanently attachable to a sup,-

porting bar of a manifolding typewriter anda carbon paper pack, of a flexible support for the carbon paper pack, said support being detachably mounted on the flexible holding sheet, and mutually engaging and interlocking instrumentali-' ties on said support and flexible holding sheet acting to hold the carbon paper support removably interlocked with the holding sheet, the carbon paper support being attached to the flexible sheet by a flexing of one of said parts in the direction of the plane of the, holding Sheet.

JOSEPH CARROLL DOYLE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

